As the actuator of the missile, the reduction of volume and weight of electric rudder can improve the performance of the missile. In order to reduce the volume and cost of the rudder in the missile , the electric rudder made the combination of BLDC directed by ball screw , four rudder can be controlled by one controller in the paper. The paper introduced the structure solution and control strategy of the controller, the controller used the DSP and FPGA as the core, consists of DSP+FPGA, the system adopted the double close-loop, it contained speed loop and position loop with PI control strategy. At last, the controller can work for four independent electric rudder at the same time. The experiment results show that the controller can work and the bandwidth of system can reach 25Hz.%电动舵机作为导弹飞行的执行机构,其体积重量的减少有利于导弹性能的提升. 为了减小体积重量和节约成本,电动舵机采用三相无刷直流电机+滚珠丝杠直连式结构,采用一个控制器来控制四路舵机. 介绍了控制器的硬件结构方案和控制策略,控制器以DSP+CPLD为核心架构,采用位置、速度双闭环PI控制,实现单一控制器同时控制四套电动舵机相互独立工作. 实验结果表明,控制器可以正常工作,舵机带宽可达到25Hz.
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